diff --git a/composition-prelude.cabal b/composition-prelude.cabal
--- a/composition-prelude.cabal
+++ b/composition-prelude.cabal
@@ -1,6 +1,6 @@
 cabal-version: >=1.10
 name: composition-prelude
-version: 1.3.0.7
+version: 1.3.0.8
 license: BSD3
 license-file: LICENSE
 copyright: Copyright: (c) 2017-2018 Vanessa McHale
diff --git a/src/Control/Composition.hs b/src/Control/Composition.hs
--- a/src/Control/Composition.hs
+++ b/src/Control/Composition.hs
@@ -130,5 +130,15 @@
 x <&> f = fmap f x
 #endif
 
+{-# RULES
+    "thread" forall f g. thread [f, g] = f . g
+  #-}
+
+{-# RULES
+    "thread/fmap" forall f fs. thread (f:fs) = f . (thread fs)
+  #-}
+
 thread :: [a -> a] -> a -> a
 thread = foldr (.) id
+
+{-# INLINE [1] thread #-}